Convert Photo to CMYK

At the moment, I haven't space available to re-add Photoshop to my system, but am seeking to take a black and while photo in my ID layout and ensure that it's in CMYK without ink values exceeding 240% total area coverage, as Acrobat preflight has reported for this image.
Can ID (CS3) correct this?
The photo is a colour scan of a B&W image. I've tried coverting the image, a TIF file, in Picassa to B&W. However, Acrobat, still shows this image as RGB with values closer to 300% total area coverage. How to handle this, without installing Photoshop?
Thank you

The "reviewing a PDF" document that you referenced in #21 above recommends that images for the interior of the book be either 600 ppi bitmap mode (B&W) or 300 ppi grayscale. Clearly a lot of your images were imported as RGB (sill not clear whether you converted the cover art to grayscale in Picassa, or it was always grayscale).
CS6 now supports direct export to composite grayscale, but CS3 does not, so IF you want grayscale images in your PDF you have 2 choices, either convert the RGB to grayscale before placing, or Distill the PDF the old way. If you have Windows, and the virtual PDF printer is installed, you can print direct to PDF and choose Composite Grayscale for the output. On Mac you'll probably need to print to file, then distill manually. See InDesignSecrets » Blog Archive » Acrobat’s Adobe PDF Printer Replaced in Snow Leopard
In either case, if you are trying to convert the RGB to grayscale during output, it is very important to FIRST edit the preference in ID for Appearance of Black and set it to Output All Blacks as Rich Black. Failure to do this step will result in 100%K type and other elements being screened to gray in the low to mid 90% range with only your images containing any areas of 100% coverage.
If you want to output the RGB images as "rich gray" but keep the total ink down to 240%, Export to PDF using Convert to Destination and try one of the profiles Rob supplied above in post #5.

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Persistent "Converting colors to CMYK" progress bar

There is a file I've been working on for a couple of weeks that I am all of a sudden having issues opening. I applied some effects to a photo within the document, and ever since then the program has been freezing up or having issues opening the file. It keeps on cycling through dozens of progress windows that say "Converting colors to CMYK". The progress bar loads in about 10 seconds before another one, exactly the same as the last, shows up. I've sat there and watched it cycle through like this for over 30 minutes on multiple occasions in the last 24 hours, just trying to be patient and see if it will ever load.
I have tried rebooting the computer, restarting the program, and downloading the latest updates. Nothing has made a difference. The file size is 26.6 MB with around 20 photos in it, and my computer isn't the fastest in the world, but this shouldn't take forever. Does anyone have any advice on this?
Thanks,
Zac
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2.4 GHz Intel Core 2 Duo
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NVIDIA GeForce 320M 256 MB

I don't know if this will work but try setting the scratch disk for Illustrator to the Seagate instead of the internal HD and see if you have better luck. With less than 20% of the HD available it is starting to become a problem. Have you ever resaved the file with a Save As and overwritten the original? If you have been changing the images without doing this there is likely a lot of old previews and such held in the hidden part of the file which will be cleared by doing this.

Does Lightroom convert images to CMYK?

I need to convert images to CMYK to submit photos for an article. I know Photoshop will convert, but don't know which software. If Lightroom does not convert to CMYK, which would I need to get?

p3vanisle wrote:
So I can locate the CMYK profile my printer is using, and install it into my design suite (PS, Illustrator, InDesign) and then export relevant filetypes in that color space? That would be terribley useful.
Yes, you have to install the profile on your computer. In Photoshop CSxx you go >Edit >Convert to Profile, and select the CMYK-profile under <Destination Space>. In Acrobat you go >Edit >Color Management, and select the profile under <Working Space>. But only Photoshop will convert the image to CMYK, whereas - at least for my understanding - Acrobat will display the image as if it were CMYK but not actually convert it.
If I do the conversion here (open their images in PS or Acrobat and convert the profile) aren't I still stuck in the 'I don't know what shade of pink you want that flower to be' still anyways?
If you get a RGB image from a client, you have to assume that the colors are as wanted. This is not different when you get a CMYK image. The problem for you is that nor everybody has a calibrated monitor, so an image might look good on their monitor but the actual color numbers will produce a print that looks different. But there is nothing you can do, except - if you have the time - adjust obvious off-colors. For instance you know the skin-color of caucasian (white) people. You know how green a lawn is, and you know that most brides wear a white gown. So if for instance the gown is blue-ish, or the skin looks overly pink, you can adjust that. More you cannot do. In case of a flower you can only accept the photo as is - unless you know this type of flower very well.
But the evaluation of color is only possible if you have a calibrated monitor that is re-calibrated regularly (every week or so). If your monitor is not calibrated you have no way of knowing if the off-color is due to the color numbers of the delivered image or a result of your un-calibrated monitor that displays the colors differently than the color numbers warrant.
If you use a calibrated monitor the colors should not change on conversion to CMYK. You can use the Softproof feature in Photoshop to check if colors are out of gamut.
- my degree is in design, yes, but we didn't cover printing and prepress specifics at all.
Yes, I have noticed in my work that the designers often have no knowledge about color management, printing, and pre-press. Good on you that you care and want to learn!
Keep on asking if you wish.

How do I convert an AI - CMYK file to an editable PSD - RGB file ?

Trying to design my online components from a AI CMYK poster for an event...but I'm getting terrible pixaltion when I drag and drop the different elements into PSD...so clearly its not converting.
Is there a way to convert the Illustrator - CMYK file into and editable PSD file in RGB?
Any help would be awesome.
Cheers
Kirby

Here is a bit more detail, posted in teh /r/graphicdesign on Reddit
"Not sure if this is the right sub but I'm wondering if anyone else has experienced pixilation when uploading banner images for event with Facebook?
I'm exported this image http://imgur.com/vWV5OnN but when posted to Facebook it comes out like thishttp://imgur.com/sbhz94e
Any ideas whats happening?"
I designed the main poster as CMYK in AI- CS6
Then dragged and dropped the layers into a new PSD - CS6 file.
Maybe they arent' web safe colours?

Convert photo to line art?

Dear Forum,
I am trialing Elements and Illustrator but cannot find a solution in help or the forums, or any book at Borders, so I hope someone can help. I am looking for a way to convert photos (JPEGS) of flowers to black line art......like a coloring book, not just black and white or grayscale or sylhouette. I will then print out the line art (1-2 pixel black line art) to clear acetate for use as a positive original for creating a silkscreen via photo emulsion exposure (and then silkscreen printing the line art to fabric for hand painting). I am doing this by hand now.....place a sheet of acetate over the photo and outlining "edges" by eye with a fine Sharpie, then using that as the positive original. See attached file for an example. The line art needs to be relatively detailed ( e.g. petals, stamen, leaves) but not absolutely perfect as I only need to print guide lines on fabric for subsequent hand painting. It seems easy to do by "eye", tracing edges of color or tone change, but I have not figured out how to make that happen in Elements or Illustrator. Of course I have only had the trial for a couple days, and have used live trace, posterization, etc, but have not been lucky. Please point me in the right direction. If I can make this happen with an Adobe product, then I will buy it.....I have hundreds of photos to convert. Thanks.....Bob

If you use Threshold, you can add some gaussian blur to the image to make the edges smoother. You can also add a brightness/contrast adjustment layer between the blurred image and the threshold layer to fine tune the edges.
If you have Windows, you might want to look at Medhi's Fine Threshold filter (freeware) found here:
http://www.mehdiplugins.com/english/finethreshold.htm
Edit: You could also use Find Edges on the image first; desaturate it; then use a threshold adjustment layer. Go back to the Find Edges layer and add gaussian blur to taste. To further fine tune, slip a brightness/contrast layer between the blurred image and the threshold to control line thickness/detail. (FWIW, I would make a copy of the Find Edges layer and blur the duplicate so if you change your mind you don't have to start the project from scratch.)

Convert photos using the Tools Photoshop Imagine Processor (Photoshop CS 5)

All of a sudden, I am having issues when I attempt to convert photos using the Tools > Photoshop > Image Processor option in Adobe Bridge. I used this methodology in the past and the conversion to JPG or TIFFs would fly with no interruption. Now I am getting now getting getting dialog boxes with "New Snapshot" in the title, I click OK, then get a message, "The command "Feather" is not currently available," I click "continue, and gert a "New Layer" dialog box, I click OK, and get a "Fill" dialog box, I click OK and the JPG or Tiff is then generated. This series then starts over on the next photo to generate. I am using Photoshop CS5 on a MAC. I did uninstall and re-install Photoshop l, but I am getting the same series on messages. Any suggestions? Thanks

It sounds like you have an action running when processing the photos
Look at the bottom of the image processor dialog and and see if Run Action is checked

Converting Images to CMYK for Print Publication

When in my workflow should I be converting images to CMYK for print publication?
Currently, I shoot RAW photographs with my DSLR in Adobe RGB, import the images into Photoshop for manipulation and then convert the final, sized image to CMYK before placing it in my Indesign document. Before going to print, I convert my files to PDF using the [PDF/X-1a:2001] preset. I use a calibrated system with a profile set for my monitor.
Since many of my pictures have shades of green, I'm often disappointed with the conversion to CMYK because I lose saturation and brightness. Am I doing anything wrong? Is there a better way of preserving the quality of colour in my images when going to a commercial printer?

To see in InDesign what color shifts will occur, use View=>Proof Colors.
I would also recommend View=>Overprint Preview.
Yes there are color shifts when converting RGB to CMYK, but those are due to the fact that the gamut of CMYK is significantly less than AdobeRGB or even sRGB. The same color shifts going to CMYK will occur whether you convert the image in Photoshop or in InDesign during PDF export or at the RIP.
Keeping the color in ICC color managed RGB has the advantage that last minute changes can be made as to what CMYK printing conditions are used, i.e. all CMYK is not the same. Furthermore, if you convert RGB to CMYK early in the workflow, you lose the ability to maintain the color gamut for display of the PDF as well as for printing to high fidelity color devices, i.e., offset or digital (especially inkjet) devices that have extra colorants such as light cyan, light magenta, orange, and/or green to dramatically expand the gamut. Once you lose the gamut in your imagery via conversion to CMYK, you can't go back.
- Dov

Convert photos of buildings to line art.

I am looking for a program that can convert photos of buildings to crisp, clean line art with no shadings or noise. Is there a program that can do this? If not what would come closest to what I need and I can test it.
Thank you.
Lisa

Here is a way to do it in Photoshop.
http://luminous-landscape.com/new-page-9/

Convert Photo(s) To DNG not permitting multiple conversions

I'm having a problem where, for extended periods, I can only individually convert photos to DNG.
Even when I have all images in a folder selected, the menu dialog reads "Convert photo to DNG...".
Currently, I'm experiencing this with Lightroom 2.3, but the problem has intermittently been an issue back to Lightroom 1. I'm using an Apple MacBook Pro, currently v10.5.6, with 4GB of RAM and ~ 10 GB of free disk space (admittedly not much, but the sooner I can get files converted to DNG, the sooner they're archived off of my hard drive).
Any one else having this problem? Any ideas what to do about it?
The image at the following link is a partial screenshot: http://lunasa.net/samples/Convertphoto.png

You need to be in Grid view before will operate on multiple selected images. The screenshot shows that you're in loupe view.

BUG Before/After Function stopped working after Convert Photo to DNG

Hi,
I just converted all my photos to DNG using Lightroom's Convert Photo to DNG function and the Before/After " \ " function (in Develop module) is not working anymore... same problem in Lightroom 3.0
regards,
Danny

I processed a Nikon .nef raw file in Lightroom
. Then I went to the Library Module under
Library and chose Convert to DNG. After the conversion
the complete history was still available. However, the Before/After function using \ or Before/After Views did not work. It was necessary to click on the History State to compare views. Using the Before/After Views, the original could be compared to the processed view by clicking on the Import state.
This will not be a problem if the files are converted to DNG during initial import.
I also recommend backing up originals and all processed files along with the Lightroom database on a least two drives on location and another off-site.

Metadata baked-in after Convert Photo to DNG?

Since I did Convert Photo to DNG to all my photos (originals were .CR2 and were Developed as well) it seems that Lightroom baked the previous metadata (XMP) to the new .DNG files so now, when I hit the " \ " keystroke to see " Before " (under Develop module) Lightroom now thinks that " Before " is the current state...
This is really bothering me, is it normal that there is no more " Before " state just because I converted all my photos to .DNG
Also, Lightroom history is now showing me " From Matadata " as the last action in the History list... Althought I never used the " Read Metadata from File " function...
So basically, I just converted to DNG all my photos and would like to be able to use the Before function " \ " under the develop module as I use to do with the .CR2...
any help would be appreciated!
thanks!
Danny

I processed a Nikon .nef raw file in Lightroom
. Then I went to the Library Module under
Library and chose Convert to DNG. After the conversion
the complete history was still available. However, the Before/After function using \ or Before/After Views did not work. It was necessary to click on the History State to compare views. Using the Before/After Views, the original could be compared to the processed view by clicking on the Import state.
This will not be a problem if the files are converted to DNG during initial import.
I also recommend backing up originals and all processed files along with the Lightroom database on a least two drives on location and another off-site.

Convert photos to line drawings

Would like to convert photos to line drawings to use as coloring books. Any help for a lightweight user would be appreciated.
Thanks in advance

Try the following:
Duplicate your image (Control J, or Command J)
Set your foreground and background colors to black and white (press D) for default
Then go to:
Filter
Filter Gallery
Sketch Folder
Photocopy
Slide the detail slider to 1 and the darkness slider to 50
Depending on your photo you may wish to adjust these sliders for
different results.
Because you duplicated your original photo you also have the option of lowering the opacity of the sketch layer to reveal the partial color photo below.
Anothering interesting twist is if you add a normal WHITE mask to the sketch layer then paint with a BLACK over parts of the sketch to reveil the colored photo below (half sketch and half photo).
Attached is a link to a free plugin for Photoshop called THREDGEHOLDER, it does pretty much the same thing but even quicker.
http://www.littleinkpot.co.uk/FreePlugins.htm
Hope it works and have lots of fun in the process!

I have photoshop CS4. How do I set the it to save my photos as CMYK "Uncoated" US Swop?

I have Photoshop CS4. How do I set it to save my photos as CMYK Uncoated US Swop for newsprint on a webpress. I can't find the proper setting, only coated.

It's usually in Edit > Color Settings and next to CMYK Workspace. As I understand it, depending on the Printing company, they would just ask for the file as Adobe RGB and handle the conversion to their offset press. Is this how they want you to prepare your photos?

ICC profile to convert RGB to CMYK,   jpeg is ok, png format have a problem

When I use ICC profile to convert RGB to CMYK, jpeg format is ok, but png format have a problem.the color is lossy.
It means, the png file color is shallow than jpeg file after convert.Could anybody help me?
thanks
source code
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Iterator;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.metadata.IIOMetadataNode;
import javax.imageio.stream.ImageOutputStream;
import org.w3c.dom.Node;
import com.sun.image.codec.jpeg.ImageFormatException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public class TestImage {
     public static void main(String args[]) throws ImageFormatException, IOException{
          BufferedImage readImage = null;
          try {
              readImage = ImageIO.read(new File("C:\\TEST.jpg"));
          } catch (Exception e) {
              e.printStackTrace();
              readImage = null;
          readImage = CMYKProfile.getInstance().doChColor(readImage);
          writeImage(readImage, "C:\\TEST_after_.jpg", 1.0f);
    protected static String getSuffix(String filename) {
        int i = filename.lastIndexOf('.');
        if(i>0 && i<filename.length()-1) {
            return filename.substring(i+1).toLowerCase();
        return "";
    protected static void writeImage(BufferedImage image, String filename, float quality) {
        Iterator writers = ImageIO.getImageWritersBySuffix(getSuffix(filename));
        System.out.println("filename�F"+filename);
        if (writers.hasNext()) {
            ImageWriter writer = (ImageWriter)writers.next();
            try {
                ImageOutputStream stream
                    = ImageIO.createImageOutputStream(new File(filename));
                writer.setOutput(stream);
                ImageWriteParam param = writer.getDefaultWriteParam();
                if (param.canWriteCompressed()) {
                    param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);//NO COMPRESS
                    param.setCompressionQuality(quality);
                } else {
                    System.out.println("Compression is not supported.");
                IIOMetadata metadata = null;
                if(getSuffix(filename).equals("png") || getSuffix(filename).equals("PNG")){
                     ImageTypeSpecifier imageTypeSpecifier = new ImageTypeSpecifier(image);
                     metadata = writer.getDefaultImageMetadata(imageTypeSpecifier, param);
                        String sFormat = "javax_imageio_png_1.0";
                        Node node = metadata.getAsTree(sFormat);
                        IIOMetadataNode gammaNode = new IIOMetadataNode("gAMA");
                        String sGamma = "55556";
                        gammaNode.setAttribute("value", sGamma);
                        node.appendChild(gammaNode);
                        metadata.setFromTree(sFormat, node);
                writer.write(null, new IIOImage(image, null, metadata), param);
                writer.dispose();
                return;
            } catch (IOException ex) {
                ex.printStackTrace();
}

Hi,
I am having similar problems. I have read somewhere that png format can not handle CMYK colorspace anyway, which I find odd (and plainly stupid IM(NS)HO) which would mean that converting to RGB and therefore using profiles is mandatory.
May be you should check if the internal format of the png files claims it is RGB or CMYK (using ImageMagick's "identify" command for example).
HTH
JG

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To convert Photos to PDF, you can subscribe to one of Adobe's services (Adobe ExportPDF or Adobe PDF Pack) or you can purchase Adobe Acrobat

Convert Photo to CMYK

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